{"instruction": "You are an expert in relationship extraction. Please extract relationship triples that match the schema definition from the input. Return an empty list for relationships that do not exist. Please respond in the format of a JSON string.", "schema": ["feature of", "part of", "used for", "conjunction"], "input": "Traditional methods for color constancy can improve surface re-flectance estimates from such uncalibrated images , but their output depends significantly on the background scene ."}
{"feature of": [], "part of": [], "used for": [{"subject": "methods", "object": "color constancy"}, {"subject": "methods", "object": "surface re-flectance estimates"}, {"subject": "uncalibrated images", "object": "surface re-flectance estimates"}], "conjunction": []}